Convert xaml to image

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i have a xaml string like

C#

string xaml = @"<Section xml:space="preserve" HasTrailingParagraphBreakOnPaste="False" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"><Paragraph FontSize="10" FontFamily="Arial" Foreground="#FF000000" FontWeight="Normal" FontStyle="Normal" FontStretch="Normal" TextAlignment="Left"><Run FontSize="13" Foreground="#FFFF0000" FontWeight="Bold" Text="Haider is a very good guy" /></Paragraph><Paragraph FontSize="10" FontFamily="Arial" Foreground="#FF000000" FontWeight="Normal" FontStyle="Normal" FontStretch="Normal" TextAlignment="Left"><Run FontSize="13" Foreground="#FF008000" FontWeight="Bold" Text="Haider is a very " /><Run FontSize="13" Foreground="#FFFF0000" FontWeight="Bold" Text="good " /><Run FontSize="13" Foreground="#FF008000" FontWeight="Bold" Text="guy" /></Paragraph><Paragraph FontSize="10" FontFamily="Arial" Foreground="#FF000000" FontWeight="Normal" FontStyle="Normal" FontStretch="Normal" TextAlignment="Left"><Run FontSize="13" Foreground="#FF0000FF" FontWeight="Bold" Text="Haider is a very " /><Run FontSize="13" Foreground="#FFFF0000" FontWeight="Bold" Text="good " /><Run FontSize="13" Foreground="#FF0000FF" FontWeight="Bold" Text="guy" /></Paragraph><Paragraph FontSize="10" FontFamily="Arial" Foreground="#FF000000" FontWeight="Normal" FontStyle="Normal" FontStretch="Normal" TextAlignment="Left"><Run FontSize="13" Foreground="#FFFFFF00" FontWeight="Bold" Text="Haider is a very " /><Run FontSize="13" Foreground="#FFFF0000" FontWeight="Bold" Text="good " /><Run FontSize="13" Foreground="#FFFFFF00" FontWeight="Bold" Text="guy" /></Paragraph></Section>"; 

public Bitmap XamltoImage(string xaml ,int Width, int Height)

{

      //convert code here

}

now i want to convert that xaml into image something like above

Posted 26-Jul-12 20:00pm

agha_ali22

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codeBegin · Answer 1 · 2012-07-26T20:03:00

Solution 1

Convert XAML Vector Graphic to PNG[^]
XAML to PNG Converter...[^]
using XAML[^]

Posted 26-Jul-12 20:03pm

codeBegin

Comments

agha_ali22 27-Jul-12 2:09am

i have something like it but empty image is created

public System.Drawing.Image ConvertXamltoImage(string XamlString, int Width, int Height)
{
UIElement visual = XamlReader.Load(System.Xml.XmlReader.Create(new StringReader(XamlString))) as UIElement;

Size size = new Size(Width, Height);

RenderTargetBitmap bmpCopied = new RenderTargetBitmap(Width, Height, 96, 96, PixelFormats.Pbgra32);
DrawingVisual dv = new DrawingVisual();
using (DrawingContext dc = dv.RenderOpen())
{
VisualBrush vb = new VisualBrush(visual);

dc.DrawRectangle(vb, null, new Rect(new Point(), new Size(Width, Height)));
}

bmpCopied.Render(dv);

PngBitmapEncoder png = new PngBitmapEncoder();
png.Frames.Add(BitmapFrame.Create(bmpCopied));
MemoryStream stream = new MemoryStream();

png.Save(stream);

System.Drawing.Image img = System.Drawing.Image.FromStream(stream);
stream.Flush();
stream.Close();
return img;
}

Jesse Chisholm 16-Sep-12 21:26pm

The MSDN says that the stream must remain open for the life of the image.
To get around this there are two solutions.

// force it to make a deep copy, which reads the stream.
1: img = img.Clone();

// force it to make a deep copy in a polite way. ;-D
2: WritableImage wi=new WritableImage(img); wi.Freeze(); img = wi;

-Jesse